Fire-vulcanizing device



l June' 28 927 K. B.'.K|LBQRN ET AL TIRE VULCANIZING DEVIQB 2Sheets-Shut l l INVENTQR:

KNHB /f/lLbbR A WILLIAM S, WaLF' BY @n TTOR Y;

Filed Nov. l5. 1922 1927. June 28 K. B. KILBORN ET Al.

TIRE VULCANIZING DEVICE Filed NOV. l5. 1922 2 Sheets-6h99?, 2

Patented June 28, 1927.

UNITED 4 STATES PATENT QFFI'CE.

KARL B. KILBOBN AND WILLIA LING RUBBER COMPANY, O

M S. WOLFE, 0F AKRON. OHIO, ASSIGNOBS TO BERRE- ]3' AKRON, OHIO, ACOBPOBATIN QF DELAWARE.

TIBE-VULCANIZING DEVICE.

Application Med November l5, 1922. Serial lo. 601,045.

This invention relates to an apparatus for vulcanizing rubber tires andmore particuliu'ly to a device of the type disclosed in the U. S.Letters 1,234,065. In e de Patent to C. E.

Miller, No. vice of this general type,

as heretofore constructed, the mold cavities and the associated heatingchambers have been formed in integral cored-out castings.

As the device is th acture or repair is eult to obtain the moldsurfaces, curing o f the causing their rapi service. or permanent natudevice is adapted tion with tires of.,

single design.

e present inve come. the foregoingr and aims to produ Furthermore.

us constructed. its manuboth troublesome and exby reason of the vaivmoldwalls. it is difliuniform heating of the thus giving;r rise to theundertires at certain portions and deterioration when in due to theintegral re 0f the,r mold Walls, the for use only in conneca single sizeand of a ntion is intended to overnnd other olnecions,

ce n tire vuleanizine device which is of simple uieehnnicnli'onstruction. thoroughly eilieient in operation, and

capable of use with designs. To attain these olii tires of various sizesand refs. the invention, generally speaking. rontemplates the formationof the mold ":ivities and the heating chambers in separnte or distinctparts which are made to condition, and which nected in sui-h m readyremoval and fit together in {luid-iight are denelinhly coniinner as topei-init the replacement of the mold Sections when desired.

The invention nl expedite the insertion and so aims to fai-ilitote andremoval of the tires in and from the individual mold envities. and inthis connection i-onteinpliites the employment of an tire is supported.i'f

airbag: rim, on which a ir thil closure of the inner side of the moldcavity duringY vuleanizw tion.

These and various other features will he fully pointed out in thedetailed which follows.

description In the accompanying drawings:

Fig. l is u front elevation of device ionstrueed a` vulesinizing inaccordance with this Fig. 2 is a side e Fig. 3 is a tran larged scale,taken levation; and sverse section, on an enon the line 3-3 of Fig.

2 and looking in the direction of the arrows.

In the embodiment illustrated, the vulcanizing device comprises acentral stationary ring-like easing member 1 mounted oir in base 5. andtwo side ring-like easing meml0 hers 2 and 3 hinged to the neutralvmember 1, as at 6 and 7. so as to be swim to open or closed condition,as desired. e central casingv member l rontiiins an annular heatA ingchamber l". whose opposite side walls 95 are constituted by mold ringsor sections and 9. The side easing members 2 and 3 also contain annularheating chambers 2* and 3, whose inner walls are constituted by moldrings or seetions 1U and 1l, respec- 70 tively, the former cooperatingwith the mold seetion 8 to define a ,mold eavit 8, and the lattercooperatingr with the moli section 9 to define e mold cavity 9s. Steamis admitted to the central heating ehnmher l through a 75 pipe 35 and tothe side heating chambers 2* sind 3 through pipes.' 36. these latterbeing swiveled, as at to a main supply pipe 38 in line with the pivots Gand 7 to .ermit the outward swinging of the side mem 'fiers 2 and w 3Without interfering with the steam corr nef-tions. 'ilnili heatingYehamher is provided with :i drain. such as n pipe 135', for thecondensed steam.

Arvor-ding to the present invention, the 55 mold rings or J-sertioi'is.above referred to, are inn/ie sopor-:iin from their respective casingmembers and :i n, designed to ln removed and i'fpliiied nt will. Thus.the two mold seofions 8 :ind f) arey detneliiihlv connected at 90opposite sides to the central .easing member l by menus oi' tliref setsof bolts l2. I3 and 14, the boltsl l2 being! common to both mold swtions sind serving to rlinip them tightly to ilu casing: member nt theirinner edges, and 95 the bolts` I3 und i4 servingv to elamp the moldsections individually to the casing member :it their outer edges, serpertieularly Fig, Il. 'l'lie mold se `rions l0 and l1 are siiriilnrly.orinerid i'o the side easing rnein- 10Q hers 2 and 3 by bolts 555, Q6and 27, 28. which elnnip euch ring! and its easing meinl bei' tightlytogether at both inner and outer edges. 'llie easing member l and theoonnerieil moldseei ions S and 9 are formed with 105 ai-curntelymachined shouldered ortions 17 and 18, whose side eontaeting acesdetermine the proper lateral loeetion of the mold sections, and whoseperipheral contacting faces determine the proper centered relation 110the mold sections together and with liag of said sections. The sidecasing members 2 and 3 and their respective mold sections 10 and 11 areprovided with similar shouldered ortions 19 and Q0, which determine the`lateral and centered relation of these mold set-tions. The complementarymold sections S, 10 and 9, 11 are further formed with interlockingshoulders 21, 22 and 23, 24, respectively, which insure the propermating of these parts in the closed condition of the casing members. lnthis connection, it is pointed out that the shoulders 2l and E23 are`beveled or chanifered along their inner edges to facilitate the closingot the mold sections. Gaskets 1G are interposed between each moldsection and its corresponding easing member at both their inner andouter edges, in order to render the heating chamber detined theretj;absrilutely tluid tight.

it will be noted that the mold sections 8, 10 and 9, 11 do not Contactwith each other at their inner edges but are separated so as to leavethe mold cavities Si" and 9"* open at their inner circumferences. Suchmold cavities, however, are closed by air-bag rims il?) fitted snugly inrecesses 35V* formed in the opposed 'laces ot the mold sections. In Fig.3. one of these rims is shown as provided with an air bag 4() havingfluid connections 4l and 'with a tire casing 42 (ot the clencher t ypc)supported thereon, the bead portions ot the casing being seated inrecesses 42 formed in the mold sections.

Locking mrn are provided to maintain the parts in intimate matingrelation during vuicanization. ln the present instance, such lockingmeans consist ot a series ot bolts 3() pivoted to suitable lugs disposedaround the central casing member 1 at both its inner and outer peripheryand adapted to cooperate with slotted arms 33 correspondingly disposedaround the side casing members 2 and 'Each of the bolts tl is providedat its i'ree end with an adjustable nut 231 carrying an eccentric orcam-shaped lever 3Q adapted to engage the outer face ot thecorresponding arm 33 in clamping the parts togather.

The operation of the improved device will now be entirely clear:

The tire casings 42,

it'ter being built. according to any of the well ltnoiwn methods, arebags t0 and mounted upon the air-bag rims 3). As thus mounted, thecasings are placed in the mold cavities 8 and 9a, the side casingmember" and 3 being opened for that purpose. The side members thenclosed and the Cam-shaped levers 32 operated to lock the airriiustirnily clamped between them. The hir bags are then inflated thronglntheconnections 41, and steam admitted to the heating chambers 13 2 and 3through the pipes 35 and 36. After the tire casings have beensubjcctcd\to a prescribed heatA for a provided with air definite len hof time, the air bags are deflated, the c amping levers released, andthe side casing unembers swung outwardly to permit the removal of thecured casings.

new set of casings may then be inserted and the above operationrepeated. f

Due to the removable nature of the mold sections, it is apparent thatthe device may be used for the vulcanization of tire casings ot' varioussizes and designs, it simply being necessary to loosen and tighten upthe clamping bolts before and after replacement of the mold sections.This interchangeability of the mold sections is greatly facilitated byreason of their shouldered portions which insure the proper location ofthe sections on the casing members as well as the 'mutual cooperation ofsuch sections in the closed condition of the casing members. Moreover,bein in the form of separate parts, the mol sections may be made ofuniform thickness throughout so as thus to insure the uniform heating ofall portions of the tire casings. This feature is farther advantageous,in that it enables the device to be built without ditliculty and at lowcost and also -provi les for the ready repair or replacement of anyparts. It is also pointed out that the use of air-bag rims for theclosure of the mold cavities is particularly desirable, inasmuch as thetire casings may be mounted within the mold cavities with the greatestpossible convenience and without remounting the casings. These andvarious other advantages will be skilled in the art.

The invention is not of course confined to the precise constructionshown and described, nor to any other particular construction by whichthe same may be carried into eect, as many changes may be made in thedetails without departing from the main principles of the invention andWithout sacrificing its chief advantages. It is to be understoodtherefore that the invention is not limited to any specific form orembodiment, except in so far as such limitations are set forth in theappended claims.

Having thus described our invention, we claim is as follows:

1. A tire vulcanizing central casing member having an annular cavityopen at its opposite sides and defined by inner and outer walls havingannular side seating surfaces, annular mold sections formed at theirinner and outer edges with surfaces adapted to seat against said seatingsurfaces on the central casing memberso as to close the open sides ofthe cavity and form in connection therewith a central heating chamber.-releasable fastening devices engaging the edges of the mold sections andthe inner and outer Walls of the casing member and acting to hold themold sections dewhat device comprising a readily appreciated bythosebroken or worn outv surfaces adapted t0 Sant against the seatingsurfaces muts assm'xated m1511155 member :md

harming in connection thel'fwth im annular heating chmuber, andrfflcaaalle 'fastening devifv'b vngmging the imm' and outer wlgsf of thementioned mobi xm-tim and hs inner und Outer walk' of 2M out@ (faxingmembers` and :111mg t0 hoh) mid mnh? ssc oni; detachably in place.

A tim vulcanizngz devine acwzrng t-f characterized .j mmm by the fact hathe

